S&S Cycle 129” Big Bore Kits for Harley Davidson 107” M-8 Engines (4.375” STROKE)
Not compatible with VVT models.
- Huge bore increase (4.320") means huge power increase
- Retains stock engine height
- Powder coat finish match factory finish, giving the bike a “sleeper” advantage
- Works with stock crankcases
- MLS (multi-layered steel) head gaskets
- Original engine serial numbers are retained
- Includes Cam Cover Badge
- Made in USA
- 910-0843 WRINKLE BLACK / HIGHLIGHTED FINS
- 910-0844 WRINKLE BLACK
DISCLAIMER: Not legal for sale or use in California on any pollution controlled motor vehicles.
Fitments
| 2023 | Harley-Davidson | FXBR Breakout 117 |
| 2022-2023 | Harley-Davidson | FLTRXST Road Glide ST |
| 2022-2023 | Harley-Davidson | FXLRST Low Rider ST 117 |
| 2022-2023 | Harley-Davidson | FXLRS Low Rider S 117 |
| 2022-2023 | Harley-Davidson | FLHXST Street Glide ST |
| 2022 | Harley-Davidson | Softail Street Bob FXBB |
| 2021, 2023 | Harley-Davidson | FXBBS Street Bob 114 |
| 2021 | Harley-Davidson | FLH Electra Glide Revival |
| 2020-2023 | Harley-Davidson | FXST Softail Standard 107 |
| 2020-2023 | Harley-Davidson | FLTRK Road Glide Limited |
| 2020-2021 | Harley-Davidson | FXLRS Low Rider S 114 |
| 2019-2022 | Harley-Davidson | FLHT Electra Glide Standard |
| 2018-2021 | Harley-Davidson | FLHC Heritage Classic 107 |
| 2018-2021 | Harley-Davidson | FLSL Softail Slim 107 |
| 2018-2021 | Harley-Davidson | FLSB Sport Glide 107 |
| 2018-2020 | Harley-Davidson | FXBB Street Bob 107 |
| 2018-2020 | Harley-Davidson | FXLR Low Rider 107 |
| 2018-2020 | Harley-Davidson | FLDE Deluxe 107 |
| 2018-2019 | Harley-Davidson | FLFB Fat Boy 107 |
| 2018-2019 | Harley-Davidson | FXFB Fat Bob 107 |
| 2018-2019 | Harley-Davidson | FXBR Breakout 107 |
| 2017-2023 | Harley-Davidson | FLHTCUTG Tri Glide Ultra |
| 2017-2023 | Harley-Davidson | FLHTK Ultra Limited |
| 2017-2023 | Harley-Davidson | FLHX Street Glide |
| 2017-2023 | Harley-Davidson | FLTRX Road Glide |
| 2017-2023 | Harley-Davidson | FLHRXS Road King Special |
| 2017-2023 | Harley-Davidson | FLHXS Street Glide Special |
| 2017-2023 | Harley-Davidson | FLTRXS Road Glide Special |
| 2017-2023 | Harley-Davidson | FLRT Freewheeler |
| 2017-2023 | Harley-Davidson | Electra Glide Police FLHTPI |
| 2017-2022 | Harley-Davidson | FLHR Road King |
| 2017-2019 | Harley-Davidson | FLHTKL Ultra Limited Low |
| 2017-2019 | Harley-Davidson | FLHTCU Electra Glide Ultra Classic |
| 2017-2019 | Harley-Davidson | FLTRU Road Glide Ultra |
